Phonograph-stop.



M. ADAIR.

PHONOGRAPH STOP.

APPLICATION FILED JUNE 17, 19w.

Patented Apr. 9, 1918.

2 SHEETS-SHEET 1 5 vwentoz 7 2 5 %1 alto cue M. ADAIR.

-PHONOGRAPH STOP.

APPLICATION FILED JUNE 17. 1916.

Patented Apr. 9, 1918.

2 SHEETSSHEET 2.

3 wmzwtoz MONTAGUE ADAIR, OF BROOKLYN, NEW YORK.

PHONOGRAIH-STOP.

Specification of Letters Patent.

Patented Apr. 9, 1918.

7 Original application filed January 27, 1916; Serial No. 74,682. Divided and this application filed June 17,

- 1916. Serial No. 104,161.

' To all whom it may concern:

' the form of a disk.

This application is a division of my prior a plication Serial No. 74.682, filed January 2?, 1916, and has for an object the provision of a braking device which will automatically stop the operation of the mechanism when the tone arm is in a non-playing positionw This object is attained by mounting a braking element on the tone arm in such a manner that the brake is applied in either of the non-playing positions to which the tone arm can be moved.

In the accompanying drawings in which like reference numerals designate like parts,-

Figure 1 is a plan view of a preferred embodiment of the invention showing the tone arm with the attached braking device in a plurality of positions.

' Fig. 2 is a side elevation of the complete device.

Fig. 3 is a sectional view taken along the line 33 of Fig. 2.

In the drawing thenumeral 1 designates the rotatable record support for the record disk 2. At 3 is shown a braking device which comprises the supporting member 4 carrying the braking elements 5 and 6. The supportin member 4 is attached to the tone arm %y means of the clamp 7 and the screw 8. The braking elements are preferably made of leather and adapted in difi'erent positions of the tone arm 9 to which theyare carried to engage the periphery and thereby stop the rotation of the record carrier 1.

In the position of the tone arm indicated at min Fig. 1 of the drawing, which is the position occupied by the arm when the sound box is removed from the record for the purpose of changing records, the braking shoe 5 is brought into engagement with the record support. In the position shown at c in Fig.

1, which is substantially the position the arm takes when the stylus has reachedrthe termination of the groove zone, the brake shoe 6 is brought into engagement with rec- 0rd support 1. Thus it will be seen that in .or the sound box 10 can be moved inwardly a slight additional distance either automatically by means such as are disclosed in the application of which this case is a division, or manually in the act of swinging the sound box 10 back onto the tone arm for the purpose of changing needles. The two positions therefore in which the braking device is actuated are the natural ones which the tone arm occupies in the ordinary operation of the machine.

A switch, indicated at 11 in Fig. 1, for controlling the circuit to the driving motor when an electric type of motor is employed may be used in conjunction with the braking device 3. In the position of the tone arm indicated at 0, the member 4 engages the arm 12 of the switch 11 to break the circuit controlled thereby. The switch contacts 13 are placed beneath the top 14 of the motor casing while the arm 12 projects outwardly through the slot 15 to a position in which the arm 12 can be engaged by the adjacent end of the braking device 3.

A stop lug 16 projects upwardly from a supporting plate 17 and acts as a guide for the supporting member 4: of the braking device 3 and as a stop for the braking device when the brake shoe 5 is in engagement with the record carrier 1. In this position of the braking device the stop lug 16 is engaged by the shoulder 18 formed by the reinforced end of the member 4 to prevent unnecessary movement of the braking device 3. In the same manner the stop lug 16 is engaged by the shoulder 19 when the brake shoe 6 is in braking position.

It will be seen that in the position of the tone arm shown at c the brake is automatically applied while the stylus is being recomprising: a record disk carried by .moved and a fresh one substituted therefor. In a subsequent movement of the tone arm from the position a purpose of leaving the record support free in order that a change of records may be made, the brake member 6 will be removed from engagement with the record carrier and the brake shoe will immediately be brought into engagement with the record carrier to hold the same while the change of records is being made. The braking'device the tone armis effective, therefore to stop the operation of the mechanism in the two natural nonplaying positions of the tone arm.

At is shown a counter-weight which is used to counter-balance the weight of the sound box 10. The counter-weight 20 is pivoted at 21 with a one-way hinge connection by means of which the counter-weight will not interfere with the raising of the sound box 10 to a position where it rests on the tone arm.

What is claimed, is:

1. A sound reproducer stopping device having a zone of grooves, a rotatable record carrier, a swinging tone arm, a braking device .carried by the tone arm and arranged to engage the rotatable record carrier when said swinging tone arm is swun to a position out of engagement with said record to prevent rotation of saidrotatable support.

2. A sound reproducer stopping device comprising: a record disk having a z onedof g vice carried by the tone arm and constructed and arranged to automatically stop the rotation of the record carrier when said swinging tone arm is swung to a position out of engagement with the record.

3. A sound reproducer stopping device comprising: a record disk having a zone of grooves, a rotatable record carrier, a tone arm adapted to be moved to and fro across the zone of grooves, and a braking device carried by the arm and arranged to engage the rotatable record carrier at the extremity of each movement of said arm.

4. A sound reproducer stopping device comprising: a record disk having a zone of grooves, a. rotatable record carrier, a tone arm movable to two nonplaying positions, and a braking device mounted on said arm arranged to stop to the position a for the- 1 device carried by support in either of said positions of the tone arm.

5. A sound reproducer stopping device comprising: a record disk having a zone of grooves, a rotatable record carrier, a tone arm movable to a plurality of non-playing positions and a braking device mounted on said arm arranged to enga e the record support in either of said positions to stop the rotation thereof. N

6. A sound reproducer stopping device comprising: a record having a zone of grooves, mechanism for giving motion to the record, a movable member adapted to move across the zone of grooves, a braking device for the mechanism actuated by the movable member at either extremity of the movement thereof, and a circuit controller adapted to be operated by the braking device.

7. A sound reproducer stopping device comprising: a record having a zone of grooves, a record carrier, a movable member adapted to move across the zone of grooves, a braking device adapted to be moved by the movable member into engagement with the record carrier when the movable member is at either side of the groove zone, and a circuit controller adapted to be actuated by said braking device,

8. A sound reproducer stopping device comprising: a. record having a zone of grooves, a record carrier, a movable member adapted to move across the zone of grooves in the operation of the device, and a braking the movable member comprising a pair of brake shoes one or the other of which is adapted to engage the record carrier at the extremity of each movement of said movable member.

9. A sound "reproducer stopping device comprising: a record having a zone of grooves, a record carrier, a movable member adapted to move across the zone of grooves in the operation of the device, a

:of June A. D. 1916. the rotation of the record MONTAGUE ADAIR.

York in the county of New 

